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Old 06-11-2011, 10:21 AM   #1 (permalink)
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Talking Oil leak and puzzled????

I have a 2003 FLHPI (Road King Police) I have noticed oil on my garage floor the other day and I have found where the oil is coming from but not sure if it is a seal or gasket, I believe it is comming from the drive pully motor side as it does not smell at all of transmission or primary fluid. Does the pully shaft insert into the mortor side of the engine, case, Ect and is there a seal? Is the seal internal or external? I have attached two photos, Thank You for your time and help

IMG_1656.JPG

IMG_1657.JPG
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Old 06-11-2011, 11:52 AM   #2 (permalink)
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Yes there is a seal behind the drive pulley where the shaft comes out of the transmission. You will need special tools to do the job and do it yourself.
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Old 06-11-2011, 01:40 PM   #3 (permalink)
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Thank you for your responce
Once the inner & outer primary cases are removed and the pully rermoved, Would the seal be on the front (external) side on the transmission case? Why is it oil leaking rather than transmission fluid if the shaft is going through the transmission case. Is this a oil bath type (very little pressure) to lubricate the bearing that the shaft is going through.
Is this something i can keep a eye on and not repair at this time as i would like to hold off as long as possible.
Thank You again for you help, Sorry for all the questions
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Old 06-12-2011, 06:51 AM   #4 (permalink)
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More likely the inner primary seal is leaking . The seal that the trans mainshaft goes thru entering the back of the inner primary . That seal leaks and the oil can flow along the mainshaft and get on the drive sprocket .
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Old 06-12-2011, 07:58 AM   #5 (permalink)
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In that case, it does not smell like primary fluid. It is difinitely oil.
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Old 06-12-2011, 08:08 AM   #6 (permalink)
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The only engine oil in that area is in the oil pan itself . The trans housing and oil pan are a single unit separate from the engine case , they just bolt together . It doesn't appear from your pics that the oil pan is leaking . Also I've never noticed a difference in smells from engine oil and Formula Plus primary oil . Are you using standard H-D fluids ?
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Old 06-12-2011, 08:40 AM   #7 (permalink)
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Yes, I am using harley davidson fluids motor oil and Formula Plus . Does the mainshaft enter the Inner primary and the engine side casing so there would be two seals 1) inner primary 2) case above the oil pan?
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Old 06-12-2011, 09:09 AM   #8 (permalink)
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Just two seals , shaft seal and starter seal plus the o-ring at the stator . Starter seal is above the shaft seal in the inner primary .
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Old 06-12-2011, 09:12 AM   #9 (permalink)
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To add to that there are also the 4 trans seals on that side . The most common leak is the inner primary trans shaft bearing seal tho .
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